Replacement inserts for face milling cutter..

[DPittman]

I got a face mill cutter with the purchase of my used milling machine and think it would be a good idea to have some extra inserts on hand.
I have browsed some sites and catalogs and I think the shape I have is considered a "APKT" style ??? But then I thought I saw some that were called something else??? I know there is different finishes and materials but I just want to get the style/size right. I assume the "M2" is the material the insert is made of but what does the "80" mean?

 

[DavidR8]

I believe M2 is the screw size.

 

[DPittman]

I believe M2 is the screw size.

Oh ya duhhhh! M2 is a hss isn't it? And these are carbide of some sort insert.

 

[PeterT]

There are different sizes of APKT inserts, so you need a few more digits to fully define

But for example APKT1604, its an M4 screw
https://www.aliexpress.com/item/328...M4X10Xd5.,carbide inserts machine spare parts

 

[DPittman]

There are different sizes of APKT inserts, so you need a few more digits to fully define

But for example APKT1604, its an M4 screw
https://www.aliexpress.com/item/328...M4X10Xd5.,carbide inserts machine spare parts

So these inserts have no other designations on them...any suggestions on how I go about identifying them? Just by the screw size?

 

[Tom Kitta]

Identify them by measuring the actual insert size in mm, how wide it is, how high and how thick + hole size. You may also want to get same or similar radios (how curved the insert is) and "attack angle" - usually I think it is around 7 deg.

Should be on aliexpress for around $20 a pack.

 

[DPittman]

Identify them by measuring the actual insert size in mm, how wide it is, how high and how thick + hole size. You may also want to get same or similar radios (how curved the insert is) and "attack angle" - usually I think it is around 7 deg.

Should be on aliexpress for around $20 a pack.

Ok thanks

 

[PeterT]

I found that same M2 designation on ebay ad but no explanation of what it means, I highly doubt it corresponds to fastener size as mentioned, 2mm is too tiny.
https://www.ebay.com/itm/10pcs-APMT...-milling-cutter-inserts-APKT1604/162847844643

This link provides a bit of insight for the common designations - possibly field 8 = extra corner clearance? My inserts have the same corner & I'm quite sure they can be rotated 180 deg to use the opposing corner
https://www.lovejoytool.com/insnomen.htm

Some providers just have their own lingo.

 

[DPittman]

Ya my brain doesn't seem to be working at optimum today.....I finally clued into it myself later today that the holding screw couldn't be that small either. Here's a picture of a m2 screw beside the insert and its correct screw. I do have other inserts that use only a m3 screw however.

 

[Tom Kitta]

I just saw some on aliexpress while answering another HSS insert related question either M3 or M2 and for around $10 a pack.